SU543783A1 - Throttle device - Google Patents

Description

The invention relates to throttle devices and can be used in pneumatic and hydraulic systems.

Known chokes, made in the form of capillaries and jets (thin wall with a hole) l.

To achieve high hydraulic resistance, the throttling channel is made with a small cross section, which reduces the reliability of devices

Throttle devices are also known that contain flat discs installed in the pilindrical housing with through throttling openings, between which liners 2 are located.

In such devices, a large increase in the number of disks and the size of the device is required to obtain a large hydraulic resistance.

The aim of the invention is to increase the hydraulic resistance of the throttle device.

This is achieved in that the liners are made with an odd number of teeth equal to the number of through holes in the discs, and

2

in the extreme disks there is one through hole, and in non-adjacent teeth of the extreme liners - bypass throttling holes.

FIG. 1 shows the device, a general view; in fig. 2 and FIG. 3 - sections of the device along the extreme liners.

The throttle device consists of a housing 1 with a lid 2 in which flat disks 3, 4, 5 and inserts b, 7, 8 are installed. On housing 1 and the roof 2 there are fittings 9 and 10. Disks 3-5 and inserts 6-8 are fixed using a nut 11. The inserts 6, 7, 8 are made with an odd number of teeth 12, dividing the space between each pair of disks into several separate closed cavities 13-14-15 (in this case each insert 6, 7 and 8 is filled with three teeth mi).

In the input disk 3 and the output disk 5, there is one through-throttling O1Vorsht, in all intermediate disks 4 there are three holes (the number of holes in each disk 4 corresponds to the number of teeth of inserts); the tooth of the extreme inserts 6 and 8 have bypass holes 16 and 17 respectively ( when making liners with more than three teeth, the bypass holes in the outer liners are in several non-adjacent teeth (x). The extreme discs 3 and 5 are mounted so that the only throttling hole in each of these discs is between the colors, which do not have overflow holes with the adjacent teeth of the corresponding extreme insert. The operation of the device is as follows. A high pressure gas (liquid) flow, supplied to the inlet plug 9, through the hole in the nut 11 and through the only throttling hole in the input disc 3 enters one of the closed cavities 13 formed by the insert 6, the disco. 3 and the first disk 4, From the cavity 13, the gas (liquid) alternately passes through one of the three holes in each intermediate disk 4, where it is throttled, and through one of the three closed cavities formed by inserts 7 between each pair of adjacent disks 4, pops into the cavity 13 formed by the liner 8. Gas through the bypass hole 17 (fluid flows into another closed cavity 14 formed by the liner 8, and then alternately passes the second row of holes in the disks 4 (where it is throttled) and the second row of closed cavities 14 , formed by inserts 7, enters the cavity 14 formed by the liner 6. From the cavity 14, the working fluid through the bypass hole 16 enters the third separate cavity 15 formed by the liner 6, from which it passes alternately through the third row of throttling holes in the intermediate disks 4 and the third row of closed cavities, through a single throttling hole in the output disk 5 goes to the outlet nipple 10. The technical and economic effect is achieved by reducing the size of the devices and with the corresponding step of reducing the used metal. The formula of the invention The throttle device, containing, its flat discs installed in a cylindrical housing with through throttling openings, between which is located and the inserts, is about the same. e e c, which, in order to increase the hydraulic resistance of the device, the inserts. Vsh: filled with an odd-numbered number of teeth, are equal to y; The number of through holes in the disks, in the extreme disks, is made on one: the 1st through hole, and in the non-adjacent teeth of the outermost ones - bypassing the throttling holes. Sources of information taken into account in the examination: 1.Dmitriev V.N., Chernyshov V.I., Pneumatic computing devices of continuous action, M., Gosenergoizdat, 1962, p. 18, fig. 3. 2. The USSR author's certificate No. 205033, M.Kl.r 16 K 47/08, 13.11. 1967.

U p

A - f (

13

7

FIG. 2

B - B

73

7

75

Fig.Z